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Reykjavík vs Saint Petersburg

Cfc Subpolar oceanicDfb Warm-summer humid continental

Comparing Reykjavík change · Saint Petersburg change

Bottom line

Saint Petersburg is the warmer of the two — about 2°C on the annual average; Reykjavík is the wetter, with 663 mm more rain a year, and Saint Petersburg the sunnier.

Warmer Saint Petersburg 2°C on the year
Wetter Reykjavík 663 mm more a year
Sunnier Saint Petersburg 11 pp less cloud
Colder winters Saint Petersburg 6°C colder nights

How the seasons compare

The differences between Reykjavík and Saint Petersburg, in everyday terms.

Summers

Saint Petersburg has far hotter summers

Reykjavík: Cool
Saint Petersburg: Mild

Winters

Reykjavík has much milder winters

Reykjavík: Cold
Saint Petersburg: Very cold

Rain & snow

Reykjavík is wetter

Reykjavík: Wet
Saint Petersburg: Moderate rainfall

Sky

Saint Petersburg is sunnier

Reykjavík: Often grey
Saint Petersburg: Often cloudy

Month-by-month charts

Temperature

Saint Petersburg is the warmer of the two — about 2°C on the annual average.

-20°-10°10°20°30° JanAprJulOct ReykjavíkSaint Petersburg

Precipitation

Reykjavík is the wetter — about 663 mm more across the year.

PRECIPITATION (mm) 075150 JanAprJulOct ReykjavíkSaint Petersburg

Clear skies

Saint Petersburg has the clearer skies — the higher line.

0%25%50%75%100% JanAprJulOct ReykjavíkSaint Petersburg

Exact monthly numbers

Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.

Avg high (°C) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Reykjavík3346912141311754
Saint Petersburg-3-3210162023211693-1
Difference-6-6-1+3+7+8+9+8+5+1-2-4
Jan – JunJanFebMarAprMayJun
Reykjavík3346912
Saint Petersburg-3-32101620
Difference-6-6-1+3+7+8
Jul – DecJulAugSepOctNovDec
Reykjavík141311754
Saint Petersburg23211693-1
Difference+9+8+5+1-2-4
Avg low (°C) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Reykjavík-1-2-214799630-1
Saint Petersburg-7-8-42712151494-1-5
Difference-6-6-2+1+3+5+7+5+3+1-1-4
Jan – JunJanFebMarAprMayJun
Reykjavík-1-2-2147
Saint Petersburg-7-8-42712
Difference-6-6-2+1+3+5
Jul – DecJulAugSepOctNovDec
Reykjavík99630-1
Saint Petersburg151494-1-5
Difference+7+5+3+1-1-4
Precipitation (mm) Reykjavík runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Reykjavík13312710975935095135128114149123
Saint Petersburg473635374769848657635651
Difference-86-91-74-38-46+19-12-48-70-51-93-73
Jan – JunJanFebMarAprMayJun
Reykjavík133127109759350
Saint Petersburg473635374769
Difference-86-91-74-38-46+19
Jul – DecJulAugSepOctNovDec
Reykjavík95135128114149123
Saint Petersburg848657635651
Difference-12-48-70-51-93-73
Snowfall (cm)
JanFebMarAprMayJunJulAugSepOctNovDec
Reykjavík284029121000012130
Saint Petersburg
Difference
Jan – JunJanFebMarAprMayJun
Reykjavík2840291210
Saint Petersburg
Difference
Jul – DecJulAugSepOctNovDec
Reykjavík00012130
Saint Petersburg
Difference
Cloud cover (%) Reykjavík runs higher most of the year
JanFebMarAprMayJunJulAugSepOctNovDec
Reykjavík858282797679817979788284
Saint Petersburg757265666365646370767678
Difference-10-10-16-13-13-14-17-17-9-2-5-6
Jan – JunJanFebMarAprMayJun
Reykjavík858282797679
Saint Petersburg757265666365
Difference-10-10-16-13-13-14
Jul – DecJulAugSepOctNovDec
Reykjavík817979788284
Saint Petersburg646370767678
Difference-17-17-9-2-5-6
Relative humidity (%) Varies through the year
JanFebMarAprMayJunJulAugSepOctNovDec
Reykjavík888786848383858686888888
Saint Petersburg979793857879818286919597
Difference+10+10+7-5-4-4-4-1+4+7+9
Jan – JunJanFebMarAprMayJun
Reykjavík888786848383
Saint Petersburg979793857879
Difference+10+10+7-5-4
Jul – DecJulAugSepOctNovDec
Reykjavík858686888888
Saint Petersburg818286919597
Difference-4-4-1+4+7+9

How both climates are changing

Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Reykjavík trends → · Saint Petersburg trends →

Reykjavík is projected to shift from Cfc to Cfb by the 2071–2099 window (SSP2-4.5).

Methodology & sources

Reykjavík

Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Keflavik, a weather station, about 39 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

Saint Petersburg

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at St. Petersburg, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →